There where question on YouTube that could Mini Fairing be used with KTM 690 windscreen.
Here are some images about that option.
So basically it could be used like this but it might be difficult to get straps on that are holding mask in place.
I might go with option just to buy Mini fairing support and then make small addition to create extra shield using some
Though even like this it might be that it goes too much up and its hard to see speedometer.
Of course I have TAB 3 mount here so if you are not using such big navigator it might not come an issue.